Body Adiposity Index (BAI) Calculator
Body fat estimated from hip circumference and height alone — no scale needed, by design.
Bergman designed BAI for settings where reliable scales are scarce — it was calibrated against DXA in the BetaGene cohort. Later validations found it works reasonably at average fatness but drifts at the lean and heavy extremes, and it has a known sex bias (better in women).
Formula
For general information only — not medical advice, a diagnosis or a treatment plan. Consult a qualified healthcare professional before making health, diet, medication or exercise decisions.
Body fat estimated from hip circumference and height alone — no scale needed, by design. The Body Adiposity Index (BAI) Calculator is a free, private body adiposity index tool — every result computes instantly in your browser with no sign-up and no data upload.
About Body Adiposity Index (BAI) Calculator
Bergman designed BAI for settings where reliable scales are scarce — it was calibrated against DXA in the BetaGene cohort. It applies BAI = hip(cm) ÷ height(m)^1.5 − 18. Use the Body Adiposity Index (BAI) Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Body Adiposity Index (BAI) Calculator
- 1Enter your details in the Body Adiposity Index (BAI) Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Body Adiposity Index (BAI) Calculator?
- ✓Instant body adiposity index result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Bergman RN et al., Obesity 2011;19:1083-9)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Body Adiposity Index (BAI) Calculator work?+
Bergman designed BAI for settings where reliable scales are scarce — it was calibrated against DXA in the BetaGene cohort. The calculation uses the formula: BAI = hip(cm) ÷ height(m)^1.5 − 18. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Body Adiposity Index (BAI) Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources, including Bergman RN et al., Obesity 2011;19:1083-9; Freedman DS et al., Obesity 2012 — validation against DXA. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Body Adiposity Index (BAI) Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general information only and is not medical advice. Always consult a qualified healthcare professional before making health decisions.
What can I use the Body Adiposity Index (BAI) Calculator for?+
It's commonly used for body adiposity index, bai calculator, hip height body fat. Body fat estimated from hip circumference and height alone — no scale needed, by design.
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